Glutamate kinase as a potential biomarker of heavy metal stress in plants
Language English Country Netherlands Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
17767957
DOI
10.1016/j.ecoenv.2007.07.006
PII: S0147-6513(07)00170-4
Knihovny.cz E-resources
- MeSH
- Biomarkers metabolism MeSH
- Phosphotransferases (Carboxyl Group Acceptor) metabolism MeSH
- Adaptation, Physiological MeSH
- Cadmium metabolism toxicity MeSH
- Soil Pollutants metabolism toxicity MeSH
- Plant Components, Aerial drug effects metabolism MeSH
- Spinacia oleracea drug effects metabolism MeSH
- Zinc metabolism toxicity MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Biomarkers MeSH
- Phosphotransferases (Carboxyl Group Acceptor) MeSH
- glutamate 5-kinase MeSH Browser
- Cadmium MeSH
- Soil Pollutants MeSH
- Zinc MeSH
Changes of glutamate kinase activity (GKA) in plants under cadmium and zinc chronic stress reported here reveal a regulatory role of this enzyme in plant heavy metal stress adaptation and indicate its potential use as a stress biomarker. Results of the first experimental series confirmed the toxic effects of cadmium and zinc at tested levels (30, 60, 90 mg Cd kg(-1) and 250, 500, 750 mg Zn kg(-1) soil) for spinach. A significant decrease of GKA in plants grown on contaminated treatments was found. Changes of GKA of plants grown on the highest contaminated treatments in the second series of experiments showed a similar course as a curve of plant stress response indicating the process of plant adaptation to chronic stresses--the decline of GKA in period of damage of cell activities, increase of its activity in period of maximum resistance and its following decrease in period of the plant metabolism depletion.
References provided by Crossref.org
Leaf fitness and stress response after the application of contaminated soil dust particulate matter
